Minecraft nodus help 1.7.9?

When i follow step by step on what all the videos are showing it always when i launch nodus it says could not find the main class please tell me what i'm doing wrong and can you please point me to another video thanks.

VSync OFF damage monitor?

I have a 60Hz monitor

When I turn off VSync I get 180 FPS on minecraft

If I keep it off will it damage my monitor?

When i press w in minecraft a search tab pops up

So i have just bought a new gaming pc and have started to play minecraft again but everytime i fullsscreen, resume game then press W to go forward windows 8 makes this search tab pop up on the side of my screen and that pauses my game!

Is there a mob cap in minecraft?

Right now I'm currently in snapshot 14w21b and I'm working to built a slime farm. I played last night and made a huge slime farm in a slime chunk using the chunkfinder.com app, and I gave it Nearly TEN LAYERS and not one spawned! I do have around 20 cows in my world but I have lit up alot of the caves though. I'm working towards lighting more caves but does that app even work? I had to reload my world and am doing it in a chunk where I've lit up more caves so I hope it works… Those suckers are the most important creatures in the game… At least what they drop.

I have a bad cpu but a good gpu?

So before i really have the evga gtx 750 ti superclocked 2gb which i found on a local market yesterday!
i was wondering can i temporary max out maybe skyrim with 40+ FPS with this gpu (the evga gtx 750 ti superclocked 2gb)? Yet i have 8gb ram kingston black edition and a bad cpu…

CPU: Intel Core Duo 2 E6400 2.13GHz (My Current CPU)
GPU: evga gtx 750 ti superclocked 2gb

CAN these Spec above max out skyrim? Also maybe minecraft with shaders and get 35/40+ FPS in both games? (Temporary until i get a new cpu and motherboard)

bonus question. : when i actually rebuild my pc (CPU+MOTHERBOARD) and have the following spec can i max out games like battlefield 4, upcoming gta v for the pc, black ops 2, titanfall

GPU: evga gtx 750 ti superclocked 2gb
CPU: i5 4460 3.2GHz
RAM: 8gb Kingston Black edition

Added (1). Resolution is 1280x1024

Which WinRAR do I download?

Hi, I'm not good with computers (yet) but which one do I get 32 or 64 bit? If it helps I have 32-bit Flash player, Windows 7 64 bit operating system and my laptop is Samsung Series 7 700G7C. I intend on using it for A pokemon emerald ROM and mincraft. I was thinking 32 but I'm unsure, thanks for the help.

Added (1). I'm not looking for an unzipper but I'm looking for which WinRAR but your suggestion is noted.

Added (2). Also anyone know any way to download it for free?